About 125 volunteers, many of them former campers, keep the 15-year-old camp running.
The government trained about 230 volunteers last year in ways to protect children, especially girls.
The host committee said it needs about 8,000 volunteers to work just before and during the convention.
About 150 volunteers spent almost four weeks setting up the approximately 50 displays, which are sponsored by 42 groups and companies.
It is expected that the games will attract about 30,000 volunteers.
The police credited about 15 black volunteers with saving the situation.
It numbered about 400,000 volunteers for much of its existence.
The force has about 189 volunteers, compared with 220 in 1999.
There are about 30 volunteers, mostly women between the ages of 18 and 25.
Republicans said they will have about 3,500 volunteers, mostly outside the city.